[Chicken-janitors] #988: Add drop-prefix to import specifiers

[Chicken Trac]

#988: Add drop-prefix to import specifiers
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 Reporter:  johnwcowan   |       Owner:         
     Type:  enhancement  |      Status:  new    
 Priority:  major        |   Milestone:  someday
Component:  unknown      |     Version:  4.8.x  
 Keywords:               |  
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 I'm proposing to add "drop-prefix" to the list of import specifiers.  It
 has the same syntax as "prefix", but the opposite semantics.  Rather than
 adding the prefix to all imported identifiers, it removes the prefix from
 any imported identifiers that already have it.  This allows you to strip
 prefixes you don't care about, or change them in two steps by wrapping
 "prefix" around "drop-prefix".

 Chibi Scheme already has this import specifier, and I have written an
 R7RS-large proposal to provide it.

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Ticket URL: <http://bugs.call-cc.org/ticket/988>
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